Phenothiazinedioxide‐Conjugated Sensitizers and a Dual‐TEMPO/Iodide Redox Mediator for Dye‐Sensitized Solar Cells | Zendy

Lin Ryan YehYung | Zendy; Chu TeChun | Zendy; Chen PingWei | Zendy; Ni JenShyang | Zendy; Shih PeiChieh | Zendy; Chen YungChung | Zendy; Ho KuoChuan | Zendy; Lin Jiann T. | Zendy

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Phenothiazinedioxide‐Conjugated Sensitizers and a Dual‐TEMPO/Iodide Redox Mediator for Dye‐Sensitized Solar Cells

Author(s) -

Lin Ryan YehYung,

Chu TeChun,

Chen PingWei,

Ni JenShyang,

Shih PeiChieh,

Chen YungChung,

Ho KuoChuan,

Lin Jiann T.

Publication year - 2014

Publication title -

chemsuschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.412

H-Index - 157

eISSN - 1864-564X

pISSN - 1864-5631

DOI - 10.1002/cssc.201402160

Subject(s) - dye sensitized solar cell , iodide , chemistry , electrolyte , redox , solar cell , iodine , photochemistry , energy conversion efficiency , inorganic chemistry , ionic liquid , organic chemistry , materials science , catalysis , electrode , optoelectronics

Metal‐free dyes containing a phenothiazinedioxide entity in the spacer were synthesized. The best conversion efficiency (7.47 %) of the dye‐sensitized solar cell (DSSC) by using new sensitizers with chenodeoxycholic acid as a co‐adsorbent and the I − /I 3 − electrolyte reached over 90 % of that of the standard N719‐based cell (8.10 %). A new type of ionic liquid containing the nitroxide radical (NO . ) and iodide was successfully synthesized and applied to the DSSCs. If the I − /I 3 − electrolyte was replaced with a dual redox electrolyte, that is, a TEMPO (2,2,6,6‐tetramethylpiperidin‐1‐oxyl) derivative with a dangling imidazolium iodide entity, the cell exhibited a high open‐circuit voltage of 0.85 V and a cell efficiency of 8.36 %.

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